I have outsourced my brain to trello. Literally.
I have a trello board for work and personal.
Bits and bobs I need for home such as insurance docs etc I photograph, stick on the trello board with a reminder date then put in the safe. I have notes on the kids mobile contracts, xmas lists, photos of present ideas, medical notes, basically everything I need to remember all sat right at my fingertips.
Same for work. Memos, instructions, display examples, meeting notes... boom. All there categorised. Someone mentions something for, say, stocktake best practice, just a little nugget so what works best and in write it in. Coming up to stocktake time I review my notes in that column and I am set up. The way the higher ups like displays? Heres one they liked last year, how can we improve, recreate etc. With this year's stock.
When my manager says tomorrows plan is this, I have a quick key on my phoen screen that opens up a card and I can type as she talks meaning i never forget what to do, where we are at, the bigger picture.
I also have one called my self advocacy board. Set up with all my kpis. Everytime I get feedback in an email, review, text etc I can screenshot and add to the board under the relevant column. I have also screenshot the final review from last year/previous years to see how I have improved on any feedback I was given to work on. Makes the yearly pdr a doddle! This is also good for raise reviews, and those days when you are feeling a bit crap...read it and actually, it's just a bad day, you are really doing a great job, look at all this lovely feedback! :)